TY  - RPRT
TI  - Maternal serum alpha-fetoprotein screening.
AU  - F G Cunningham
AU  - L C Gilstrap
PY  - 1991
DO  - 10.1056/nejm199107043250109
UR  - https://pubmed.ncbi.nlm.nih.gov/1710778/
ID  - 1710778
ER  -